Compression ring



Mardl 28, 1933. G. M. M. GRANT 1,903,107

COMPRESSION RING Filed Oct. 18, 1952 INVENTOR.

five/(14.14.

g ATToRN Patented Mar. 28, 1933 I l I UNITED STATES-PATENT OFFICE GERALD M. M. GRANT, OF LOS ANGELES, CALIFORNIA COMPRESSION RING Application filed October 18, 1932. Serial No. 638,293.

My invention relates to compression rings My improved compression ring, as illusof the type used on pistons and more particutrated in Figs. 1 and 2, consists of two parts, larly .to the'type of ring with which there is 7 and 8, with a spring receiving seat 9 formed used a spring which is placed in the bottom in their inner edges, and from the edges of 5 of the piston groove and which operates to said seat 9, said ring parts are formed with yieldingly press the piston ring or compresbeveled edges, 7 and 8. The spring is desigsion ring outwardly into yielding engagenated l0 and is of the undulating torm and is ment with the wall of the cylinder. sufficiently resilient to press the ring parts The present invention has among its outwardly against the wall 4 of the cylinder.

10 salient objects to provide a compression ring The object and advantage of providin the so constructed on its inner edge that it not beveled inner edges to the ring parts 1s to only has a seat to receive the spring, but has facilitate the assembling of the ring parts one or more beveled edges for guiding the and the spring in proper relationship within spring into the seat or recess provided therethe piston groove. It will be readily under- 15 for, thus greatly facilitating the assembling stood that when the spring is placed in the of the spring and'the ring in place in the groove and the ring parts are then placed piston groove; to provide an improved ring therein that these beveled edges will autostructure with an increased sealing area and inatically guide and cause the spring to move therefore an increased cooling surface; to into the spring-receiving seat 9, as said ring 0 provide an improved ring of the character parts are pressed into the groove. The-ring referred to which can be made in two coparts are also wider along the surfaces which operating parts with a common spring for engage with the top and bottom walls of the both parts, each part having a portion of the piston groove, that is, along the surface desigspring seat formed therein and thus making nated 11 and 12, thus increasing the sealing 25 it possible also tostagger the joints of the surface area, and also the cooling surface. ring parts, whereby the joint in each ring By reference to Fig.2, it will be seen that part is bridged by the other ring part; and, the jointor split in the ring part 7, is at one in general, to provide a simplified, practical place, designated 13, and the joint or split of and efficient compression ring of the charthe other ring part8, is at 13, the ring part acter referred to. 7 being broken away for a part of the circum- In order to fully illustrate my invention, ference in order to show it. By this arrange- I have shown the two forms thereof on the ment a body part of each ring part bridges accompanying sheet of drawing, which I will the joint or split in the other part and thus now describe. an open joint or split across the full axial Figure 1 is an enlarged, fragmentary secaiea of the ring is prevented.

tional view through portions of the piston, In Fig. 3, I have shown'a one piece ring, cylinder wall, and a two part ring in place designated 14, with a spring-receiving seat therein; 15, with the beveled inner edges 14;, 14 and a Figure 2 is a'transverse sectional View spring lfi of the same formshown in the 40 through a cylinder and piston, and taken other V1WS.'

on the lines 22, and 2'2' of Fig. 1; and It will be understood from the showing in Figure 3 is a sectional view similar to that all views that if the undulating spring is shown in Fig. 1, but showing a one piece ring placed first 1n the piston groove, it will natuwith spring seat, spring and beveled inner rally seatedgewise upon the bottom or lower d floor of the groove. It will also be clear that 9 eferring now in detail to the drawing, when the ring is put into place, the lower 4 designates the cylinder wall and 5 the piston beveled edge, as t closes in around the groove, and 6 the piston groove, in all views, only one will lift the spring and cause t to snap into groove being shown and that onan enlarged the seat formed to rece1ve 1t 1n the manner scale for clearness. clearly indicated in both Figs. 1 and 3.

I do not limit my invention to the showing as made for explanatory purposes, except as I may be limited by the hereto appended claims.

I claim:

1. A compression ring of the character referred to having formed in its inner side a spring-receiving seat of rectangular form in cross section and having an inner side beveled inwardly to the inner edge of the bottom horizontal wall of said seat, and a spring of rectangular form in cross section to fit into said seat, said beveled edge operating to guide said spring into said seat as the ring and spring are placed in a piston groove. 2. compression ring formed in two parts and having formed in their inner edges a common spring-receiving recess of rectangular form in cross section, one of said ring parts having its inner side beveled inwardly to the inner edge of the bottom horizontal wall of said recess, and a spring formed in cross section to fit into said recess.

3. A compression ring formed in two parts and having their inner sides beveled with the beveled surfaces converging toward the joint between said ring parts, then extending outwardly radially and parallel with each other and then axially to form a spring-receiving seat of rectangular form across said joint, and a spring formed to fit said seat and I to bridge said joint, said beveled sides being said spring-receiving adapted to guide said spring into operating position as said parts and spring are assembled together.

4. In combination with a piston having a ring groove therein, a compression ring in two parts having formed in its inner side a spring-receiving seat of rectangular form in cross section across the joint of said two parts, one of said parts having its inner side beveled inwardly to the inner edge of said seat, and a spring of rectangular form in cross section and of undulating form circumferentially interposed between said ring groove and within seat, said beveled edge being adapted to gui e said spring to said seat as said parts are assembled in said groove.

Signed at Los Angeles, Los Angeles County, California, this 14th da of October, 1932.

GERALD M. GRANT. 

